UPDATE!

So, after hours upon hours trying to figure out why my car keeps on dying we did not solve the issue but atleast narrowed it down to where the dirty gremlin might be.

While doing a draw test, my mech started pulling fuses in the glovebox. Turns out fuse #61 is the issue, the fan module 50amp. Immediately the reading dropped from dropped from 21 to 2. So, I mentioned this forum and the Final Stage Resistor inferring that it might be related however, we are not too sure about where this fuse exactly relates! Anyways, turns out we pop the hood and unplug the FSR just to see what happens with air conditioning on full blast. Well, the fan was intermittently budging clockwise and sometimes twitching counterclockwise but that's it! We pulled that fuse out, and the auxiliary fan didn't move. So the FSR is for the fan outside. We came to the conclusion that the draw is coming from that circuit that fuse is on. Please excuse my terms, I am in no way technically inclined and am trying my best to translate to you guys about what happened. Nevertheless, I pulled out the fuse #61 and the auxillary fan modulator (the plug that allows the fan to have different speeds) before I went to bed and the P light still remains on when I checked this morning. I did that to see if it was related in anyways and it doesn't look like it. Any further input would be highly appreciated. I hope this is not a problem with the ECU...